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Revenue Recognition - Additional Information (Detail) $ in Millions | Sep. 30, 2018 USD ($)
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Product Revenue Allowance and Revenue Categories [Line Items] |
Remaining reserves balances recorded as accrued liabilities | $ 0.5
Chargebacks and Discounts |
Product Revenue Allowance and Revenue Categories [Line Items] |
Reserves recorded as reduction of accounts receivable | $ 0.9

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- Definition Product revenue allowance and remaining reserves classified as accrued liabilities. + References No definition available. + Details
Name: | dvax_ProductRevenueAllowanceAndRemainingReservesClassifiedAsAccruedLiabilities
Namespace Prefix: | dvax_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Product revenue allowance and reserves classified as reduction in accounts receivable. + References No definition available. + Details
Name: | dvax_ProductRevenueAllowanceAndReservesClassifiedAsReductionInAccountsReceivable
Namespace Prefix: | dvax_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | srt_ValuationAndQualifyingAccountsDisclosureLineItems
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=dvax_ChargebacksDiscountsAndOtherFeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |